GEA VARIVENT X R Series, Operating Instructions Manual

Page: 24 / 104

3.1.2.2 Spring-To-Open actuator function (NO)
Figure 3-3 - Valve type X_R open in idle position
(NO)
The actuator is spring-to-open (NO). The
valve is open in the idle position.
Identification on the spring-to-close low-
er valve seat:
●
Ring groove (11) on the wrench flat
surface of the valve disk rod.
Identification on the T.VIS control top
once the installation (SET-UP) has been
completed:
●
Permanent light (1) green: valve in
idle position
●
Permanent light (1) yellow: valve in
end position (actuated position)
3.1.2.3 Modifying the actuator closing direction
INFO When the idle position is reversed by turning the actuator, the actuation
forces may no longer be sufficient for the application. Therefore, check the
actuator size before changing the closing direction.
24 / 104 - 3.1 Set-up and function
0000000881 - 001 - EN-GB